20662362841 has 2 divisors, whose sum is σ = 20662362842. Its totient is φ = 20662362840.

The previous prime is 20662362821. The next prime is 20662362857. The reversal of 20662362841 is 14826326602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10708110400 + 9954252441 = 103480^2 + 99771^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20662362841 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20662362794 and 20662362803.

It is not a weakly prime, because it can be changed into another prime (20662362821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10331181420 + 10331181421.

It is an arithmetic number, because the mean of its divisors is an integer number (10331181421).

Almost surely, 2^20662362841 is an apocalyptic number.

It is an amenable number.

20662362841 is a deficient number, since it is larger than the sum of its proper divisors (1).

20662362841 is an equidigital number, since it uses as much as digits as its factorization.

20662362841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 40.

The spelling of 20662362841 in words is "twenty billion, six hundred sixty-two million, three hundred sixty-two thousand, eight hundred forty-one".